Benzodiazepines (Xanax, Valium, Diazepam, Clonazepam and Lorazepam) are toxic to dogs and cats. If your pet ingested any of these drugs call. Lorazepam, sold under the brand name Ativan among others, is a benzodiazepine medication. Withdrawal symptoms, including rebound insomnia and rebound anxiety, Intravenous diazepam or lorazepam are first-line treatments for convulsive Adinazolam Alprazolam Clonazolam Estazolam Flubromazolam. Apr 23, - easily abused. Learn more from WebMD about the effects, symptoms, and abuse of these drugs. Familiar names include Valium and Xanax. They are Short-acting - Alprazolam (Xanax), lorazepam (Ativan); Long-acting Signs and symptoms of acute toxicity or overdose may include the following.